TW200802339A - An optical disc reading apparatus and method therefore - Google Patents

An optical disc reading apparatus and method therefore

Info

Publication number
TW200802339A
TW200802339A TW096116900A TW96116900A TW200802339A TW 200802339 A TW200802339 A TW 200802339A TW 096116900 A TW096116900 A TW 096116900A TW 96116900 A TW96116900 A TW 96116900A TW 200802339 A TW200802339 A TW 200802339A
Authority
TW
Taiwan
Prior art keywords
error
processor
optical disc
signal
reading
Prior art date
Application number
TW096116900A
Other languages
Chinese (zh)
Inventor
Coen Adrianus Verschuren
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of TW200802339A publication Critical patent/TW200802339A/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only

Abstract

An optical disc reading apparatus, such as a Near Filed optical disc reading apparatus, comprises a disc reader (401) which generates a first signal by reading an optical disc (403). A bit detector (407) detects data values in response to the first signal. The detected data is fed to an error correction processor (407) which performs error correction on the stream of detected data. In addition, the reading apparatus comprises an error signal processor (411) which generates a reading head position error signal processor (411) which generates a reading head position error signal. The error signal may for example be indicative of an air gap error or a tracking error for the reading lens. The error signal is fed to a reliability processor (413) which sets reliability values of at least some of the detected data in response to the head position error signal. The error correction performed by the error correcting processor (407) then performs the error correction taking the reliability values into account. The invention may allow improved error correction performance.
TW096116900A 2006-05-15 2007-05-11 An optical disc reading apparatus and method therefore TW200802339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06113930 2006-05-15

Publications (1)

Publication Number Publication Date
TW200802339A true TW200802339A (en) 2008-01-01

Family

ID=38686750

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096116900A TW200802339A (en) 2006-05-15 2007-05-11 An optical disc reading apparatus and method therefore

Country Status (8)

Country Link
US (1) US20090154319A1 (en)
EP (1) EP2022052A2 (en)
JP (1) JP2009537931A (en)
KR (1) KR20090009323A (en)
CN (1) CN101449330B (en)
RU (1) RU2435234C2 (en)
TW (1) TW200802339A (en)
WO (1) WO2007132401A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200457724Y1 (en) * 2011-06-03 2012-01-02 삼원폴리텍(주) Side window for special vehicle

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341249A (en) * 1992-08-27 1994-08-23 Quantum Corporation Disk drive using PRML class IV sampling data detection with digital adaptive equalization
US5701314A (en) * 1995-12-21 1997-12-23 Cirrus Logic, Inc. On-the-fly error correction using thermal asperity erasure pointers from a sampled amplitude read channel in a magnetic disk drive
US6243350B1 (en) * 1996-05-01 2001-06-05 Terastor Corporation Optical storage systems with flying optical heads for near-field recording and reading
US5892745A (en) * 1996-08-27 1999-04-06 Seagate Technology, Inc. System and method to compensate for data defects within a magneto-optical computer memory device
JP3839959B2 (en) * 1998-06-05 2006-11-01 パイオニア株式会社 Information reproducing apparatus, information recording apparatus, information reproducing method, and information recording method
JP4083883B2 (en) * 1998-08-05 2008-04-30 松下電器産業株式会社 Error detection / correction method
JP2001118337A (en) * 1999-10-15 2001-04-27 Sony Corp Method for detecting dropout and signal reproducing device
EP1271509A1 (en) * 2001-06-22 2003-01-02 STMicroelectronics S.r.l. Method and apparatus for detecting and correcting errors in a magnetic recording channel of a mass storage system
US20050078584A1 (en) * 2003-10-09 2005-04-14 Cheertek, Inc. System and method for error correction in optical disk system
JP2005209246A (en) * 2004-01-20 2005-08-04 Sony Corp Optical disk apparatus and its control method
WO2006018749A1 (en) * 2004-08-20 2006-02-23 Koninklijke Philips Electronics N.V. Optical scanning device
JP2006073120A (en) * 2004-09-03 2006-03-16 Tdk Corp Data recording and reproducing system

Also Published As

Publication number Publication date
CN101449330A (en) 2009-06-03
WO2007132401A2 (en) 2007-11-22
EP2022052A2 (en) 2009-02-11
WO2007132401A3 (en) 2008-02-21
RU2008149108A (en) 2010-06-20
CN101449330B (en) 2011-08-10
KR20090009323A (en) 2009-01-22
US20090154319A1 (en) 2009-06-18
RU2435234C2 (en) 2011-11-27
JP2009537931A (en) 2009-10-29

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